So, there I was, on that -famous by now I suppose- Redguard, having just been formally recognized as Dragonborn by the Greybeards.

Upon turning to Lydia, I noticed something was way off her usual behavior. She was standing there, looking at me, with http://img594.imageshack.us/img594/391/2013012700001.jpg

Could be Hearthfire, or the fact that in the previous playthroughs, I would change her gear early on. Still, I play since day one and I've never, never seen her doing that thing before

http://assets.thehollywoodgossip.com/attachments/xlarge_l/mckayla-is-not-impressed.jpg

Good one

I think I've figured it out. It has to be the torch I gave her -replaces the shield at night and when indoors, apparently she goes like that.